Questions tagged [clamp]

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7
votes
1answer
136 views

Why is a clamp meter unaffected by nearby wires?

I understand a clamp meter works by measuring the magnetic field generated by current flowing through a wire. It's well known that clamping 2 wires carrying the same current in opposite directions ...
0
votes
1answer
72 views

How to scale +15v/-15v signal to +10v/-5v?

I have a control voltage signal of an audio synthesizer that goes from +15v to -15v and I want to scale it into +10v to -5v. I want to scale its range. How can I do that? I guess a way to do it ...
2
votes
1answer
84 views

Looking for a 15kV Zener - or equivalent circuitry

I have a high frequency high voltage module that puts out about 15kV (not the stun gun modules sold on eBay). Because of the circuit design the transformer is damaged if it does not arc over. I am ...
1
vote
2answers
73 views

Clipping an AC line voltage

I've got a linear step-up transformer (120V AC input) which has an output that under load nominally supplies 230V AC @ 100mA. But with no load it floats to as high as 280 V. I need to switch the load ...
3
votes
0answers
96 views

How to select a diode for baker clamp?

What are the requirements when selecting a diode for baker clamp circuit? 1- for example, How the reverse leaking current of the diode affects the circuit? can a diode with relatively high reverse ...
0
votes
1answer
46 views

During DC restoration of a video signal how is the first sync pulse detected?

DC restoration of an AC coupled video signal can be performed by clamping to some reference voltage, during the horizontal sync periods of the video. This all seems fine in a running system, when the ...
0
votes
1answer
52 views

Is this current clamp meter measuring correct according to its specs?

A 24V DC power supply is supplying around 2.4A to a pure resistive load. The input voltage is 230Vrms. So I estimated the rms current drawn from the power network as: P/230 = (24*2.4)/230 = 250mA. ...